       /recurse\    #/?\ zero
print=!\@\>?!\@/<@\.!\-/
         |   \=/  \=itoa=@@@+@+++++#
         !     /+ !/+ !/+ !/+   \    mod10
         /<+> -\!?-\!?-\!?-\!?-\!
         \?!\-?!\-?!\-?!\-?!\-?/\    div10
            #  +/! +/! +/! +/! +/
